CN-224208903-U - Stamping drawing die with constant locking force

CN224208903UCN 224208903 UCN224208903 UCN 224208903UCN-224208903-U

Abstract

The utility model relates to the technical field of stamping drawing dies, in particular to a stamping drawing die with constant locking force, which comprises a lower die holder, a male die, a blank holder, a lower elastic component, an upper die holder, a female die, an upper elastic component and two rotary locking mechanisms, wherein the two rotary locking mechanisms are symmetrically arranged on two sides of the blank holder and the female die, the bottom surface of the female die is used for abutting against the top surface of the blank holder, and when the upper die holder and the lower die holder are matched, the rotary locking mechanisms press the upper elastic component and the lower elastic component and lock the blank holder and the female die so as to apply constant locking force to the blank holder and the female die. According to the utility model, the edge of the female die and the blank holder are locked by the rotary locking mechanism, the locking force is constant, so that the pressing force of the edge of the female die and the edge of the blank holder pressing the workpiece is constant, and the rebound opposite-top force of the upper elastic component and the lower elastic component is counteracted, so that the workpiece is subjected to stamping and drawing forming stably, the problem of cracking or wrinkling is avoided, and the stamping and drawing forming quality is improved.

Inventors

XUE FEI
LIU XIAOLONG
Zhang Xuanfei
Jiang Hekai
WU XU
YU LIN
YU QIANXI

Assignees

广东中泰工业科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250527

Claims (10)

1. A stamping drawing die with constant locking force is characterized by comprising a lower die holder (1), a male die (2) arranged on the upper side of the lower die holder (1), a blank holder (3) sleeved on the outer side wall of the male die (2) in a lifting manner, a lower elastic component (4) obliquely arranged on the lower side of the blank holder (3), an upper die holder (5) arranged above the lower die holder (1) in a lifting manner, a female die (6) arranged on the lower side of the upper die holder (5) and used for being matched with the male die (2) in a concave-convex manner, an upper elastic component (7) obliquely arranged on the upper side of the female die (6) and two rotary locking mechanisms (8) movably arranged between the upper die holder (5) and the lower die holder (1), wherein the two rotary locking mechanisms (8) are symmetrically arranged on two sides of the blank holder (3) and the female die (6), the bottom surface of the female die (6) is used for being in contact with the top surface of the blank holder (3), and when the upper die holder (5) and the lower die holder (1) are in a concave-convex fit, the upper elastic component (7) and the lower elastic component (4) are used for exerting constant locking force on the blank holder (6) and the blank holder (3).
2. A stamping and drawing die with constant locking force as claimed in claim 1, wherein the rotary locking mechanism (8) comprises a lifting plate (9), a nitrogen spring (10), a rotary locking member (11), a swinging block (12), a collision block (13) and a stop block (14), the rotary locking member (11) is in a shape of 匚, the nitrogen spring (10) is arranged on the upper side surface of the lower die holder (1), the nitrogen spring (10) is positioned outside the periphery of the male die (2), the lifting plate (9) is arranged at the top end of the nitrogen spring (10) and is positioned below the blank holder (3), an opening of the rotary locking member (11) faces the blank holder (3) and the female die (6), the bottom of the rotary locking member (11) is rotatably connected to the lifting plate (9), the bottom of the rotary locking member (11) is positioned between the lifting plate (9) and the lower elastic component (4), the top of the rotary locking member (11) is used for pressing the upper elastic component (7), the pressing block (12) is rotatably connected to the lower die holder (1) and is positioned at the side far from the swinging block (11) and is positioned at the outer side of the rotary locking member (11), the abutting block (13) is arranged on the lower die holder (1) and is positioned on one side of the swing block (12) far away from the rotary locking piece (11), an abutting inclined surface (15) and a vertical surface (16) are sequentially arranged on the inner side surface of the top of the abutting block (13) from top to bottom, the outer side surface of the swing block (12) is used for abutting against the abutting inclined surface (15) or the vertical surface (16), the blocking block (14) is arranged on the lower side of the upper die holder (5), the blocking block (14) is positioned above the abutting block (13) and is used for abutting against the outer side surface of the swing block (12), the blocking surface of the blocking block (14) and the vertical surface (16) are positioned on the same vertical surface (16), when the outer side surface of the swing block (12) abuts against the abutting inclined surface (15), the swing block (12) and the rotary locking piece (11) outwards rotate to an inclined state, the rotary locking piece (11) releases the female die (6) and the blank holder (3), when the outer side surface of the swing block (12) abuts against the vertical surface (16), the swing block (12) and the rotary locking piece (11) upwards rotate to the elastic locking piece (7) and the rotary locking piece (11) upwards, the elastic locking piece (4) is pressed to the elastic locking piece (4), so that the rotary locking piece (11) applies constant locking force to the female die (6) and the blank holder (3).
3. A constant locking force stamping and drawing die as claimed in claim 2, characterized in that the rotary locking member (11) is rotatably connected to the lifting plate (9) via a first rotation axis (17) and the pendulum mass (12) is rotatably connected to the lower die holder (1) via a second rotation axis (18).
4. A constant lock force stamping and drawing die as claimed in claim 2, characterized in that the rotary lock mechanism (8) further comprises a first reset driving member (19) mounted to the upper die holder (5), the first reset driving member (19) being adapted to apply an outwardly rotating reset driving force to the top end surface of the rotary lock member (11).
5. A constant locking force stamping and drawing die as claimed in claim 2, characterized in that the rotary locking mechanism (8) further comprises a second return driving member (20) mounted to the abutting block (13) at the vertical face (16), the second return driving member (20) being adapted to apply an inwardly rotating return driving force to the bottom outer side face of the swinging block (12).
6. A constant lock force stamping and drawing die as claimed in claim 2, characterized in that the rotary lock mechanism (8) further comprises a third return driving member (21) provided to the lifting plate (9), the third return driving member (21) being adapted to apply an upward return driving force to the bottom surface of the rotary lock member (11) so that the rotary lock member (11) is rotated outwardly.
7. A constant locking force stamping and drawing die as claimed in claim 1, characterized in that the top surface of the lifting plate (9) is provided with a relief bevel (22), the relief bevel (22) being able to provide a relief space for the outward rotation of the rotary locking member (11).
8. A constant locking force stamping and drawing die as claimed in claim 1, characterized in that the upper elastic element (7) and the lower elastic element (4) are each belleville spring elements.
9. A constant locking force stamping and drawing die as claimed in claim 2, characterized in that the inner side of the pendulum mass (12) is embedded with a first wear plate (23), the first wear plate (23) being intended to abut against the outer side of the swivel lock element (11).
10. A constant locking force stamping and drawing die as claimed in claim 1, characterized in that the stop surface of the stop block (14) is fitted with a second wear plate (24), the second wear plate (24) being intended to abut against the outer side of the pendulum block (12).

Description

Stamping drawing die with constant locking force Technical Field The utility model relates to the technical field of stamping drawing dies, in particular to a stamping drawing die with constant locking force. Background At present, in a stamping and drawing molding process of an automobile plate, an upper die seat is driven by a stamping machine to move downwards, the edge of a workpiece is pressed on a blank holder by the bottom surface of the die, a nitrogen spring provides elasticity for the blank holder so that the die and the blank holder can press the edge of the workpiece, but as the die, the workpiece and the blank holder gradually move downwards, the compression amount of the nitrogen spring is increased, the elasticity applied by the nitrogen spring to the blank holder is gradually increased, so that the pressing force for pressing the workpiece is gradually increased, the pressing force for pressing the workpiece is unstable, when the pressing force is overlarge, the workpiece is easy to break or crack in the stamping and drawing molding process, when the pressing force is overlarge, the workpiece is easy to fold or wrinkle in the stamping and drawing molding process, the quality of the workpiece is difficult to be ensured, the upward elasticity of the nitrogen spring can form outward opposite jacking force, and the opposite jacking force can be finally acted on the stamping machine to form resistance to the stamping machine, the impact on the stamping machine is caused, and the performance requirement on the stamping machine is improved. Thus, the drawbacks are quite apparent and there is a need to provide a solution. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide a stamping drawing die with constant locking force. In order to achieve the above purpose, the present utility model adopts the following technical scheme: A stamping drawing die with constant locking force comprises a lower die holder, a male die arranged on the upper side of the lower die holder, a blank holder sleeved on the outer side wall of the male die in a lifting manner, a lower elastic component obliquely arranged on the lower side of the blank holder, an upper die holder arranged above the lower die holder in a lifting manner, a female die arranged on the lower side of the upper die holder and used for being matched with the male die in a concave-convex manner, an upper elastic component obliquely arranged on the upper side of the female die, and two rotary locking mechanisms movably arranged between the upper die holder and the lower die holder, wherein the two rotary locking mechanisms are symmetrically arranged on two sides of the blank holder and the female die, the bottom surface of the female die is used for abutting against the top surface of the blank holder, and when the upper die holder and the lower die holder are used for pressing the blank holder and the female die, the rotary locking mechanisms exert constant locking force on the blank holder and the female die. Further, the rotary locking mechanism comprises a lifting plate, a nitrogen spring, a rotary locking piece, a swinging block, a collision block and a stop block, wherein the rotary locking piece is 匚 -shaped, the nitrogen spring is arranged on the upper side face of the lower die holder, the nitrogen spring is positioned outside the periphery of the male die, the lifting plate is arranged on the top end of the nitrogen spring and positioned below the blank holder, an opening of the rotary locking piece faces downwards to the blank holder and the female die, the bottom of the rotary locking piece is rotationally connected to the lifting plate, the bottom of the rotary locking piece is positioned between the lifting plate and the lower elastic component, the bottom of the rotary locking piece is used for pressing the downward elastic component, the top of the rotary locking piece is used for pressing the upward elastic component, the swinging block is rotationally connected to the lower die holder and positioned on one side of the rotary locking piece far away from the blank holder, the inner side face of the swinging block is used for abutting against the outer side face of the rotary locking piece, the inner side face of the swinging block is sequentially provided with an abutting inclined face and a vertical face from top to bottom, the outer side face of the swinging block is used for abutting against or the vertical face, the bottom of the rotary locking piece is rotationally connected to the lifting plate, the bottom of the rotary locking piece is positioned between the lifting plate and the lower elastic component, the swinging block is positioned on the upper side face of the vertical face of the rotary locking piece is used for pressing the same as the vertical face of the rotary locking piece, and the vertical face is used for pressing the vertical face of the rotary locking piece is arran